Electric alarm attachment for journal-bearings.



J. L. ROGERS.

ELECTRIC ALARM ATTACHMENT FOR JOURNAL BEARINGS.

APPLIGATION FILED AUG-28.1911.

Patented Oct. 15. 1912.

6 Ho vvm o UNITED STATES J'liMEs EDlT-ARD ROGER-S, OF BELOIT, KANSAS.

,nLnernIc ALARM ATTACHMENT rbnaounnan-nnanmos.

Application filed August 2a, 1911. Serial H0. 646,421.

"To al whom it may concern.-

Be it known that I, 'JAMns Eowane Rocnns a citizen of the United States, residing at Beloit, in the county of Mitchell and State of Kansas. have invented certain new and useful lmproveinents in Electric Alarm rtttachments tor Journtil-Bearings; and I do declare the following to be a full clear, and exact des tription oi' the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in.

be sounded at any desired point thereby indicating the corulition of the bearing in time to prevent any damage which might result from the overheating thereof.

A further object is to provide a device of this character which will be simple, and inexpensive in construction, eflicient and reliable in operation and which may be connected with an annunciator or similar indicating mechanism whereby the machine or the particular bearing to which the device is attached will be indicated.

lVith these and other objects in View, the invention consists of certain novel features of construction, and the con'ibination and arrangement of parts as will be more fully described and claimed.

In the accompanying drawings: Figure 1 Y is an end view of a journal bearing showing the invention applied thereto; Fig. 2 is a top plan view of the same; Fig. 3 is a detail perspective view of the automatic switch or circuit closer of the invention.

In the embodiment of the invention, I have illustrated the same in connection with a bearing consisting of a base member 6', an upper member formed in the shape of an arched cap plate 6, and bolts "5 passing vertically upward. through said members at either side of the arch and having nuts 7 on.

their, upper ends, while their heads 5 are be neath the base member 6 seen in Fig. 1. In carrying out the invention I provide a circuit closer or switchv comprisinga plate 1 Specification of Letters Patent.

Patented Oct. 15,1912.

} adapted to be secured to the journal bearing at any suitable position and in any suitable manner, said plate being here shown as hav ing on its inner end an integral spring contact arm or blade 2 which in the present instance is shown as being curved upwardly from the attaching plate. In the present having a Hat body provided with two holes t 3 and 4, the former of which is of sufficient size to loosely surround one of the fastening bolts 5 which secures the capplate 6 of the bearing in place as shown by the dotted circle in Fig. '2; and the plate 1 is clamped beas shown. On the bolt 5 and between the opposite sides of the plate 1 and the'adjacent surfaces of the nuts 7 and 8 are-arranged washers t) termed of mica or any other. suitable insulating material whereby the circuit closer is fully insulated from the nuts. The hole 3 in the plate 1 has a diameter considerably greater than the diameter of the bolt thus preventing any possibility of a contact occurring between the bolt and the plate 1.

Engaging the hole 4 in what might be called the heel at the outer end of the attaching plate 1 is a binding screw 10 to which is connected the terminal of one of the current conducting wires 11 of an electric circuit, the other wire 12 of which is connected in any suitable manner with the journal bearing and is here shown as being clamped beneath another cap-fastening nut on a bolt 13. In the circuit formed by the conducting wires 11 and 12 is arranged a battery 14 or other source of electrical supply and a bell or other form of alarm 15.. The alarm 15 may be located near the bearing or at any desired distant point. What might be called the toe closer when the latter is arranged as herein shown and described, is deflected or sprung upward slightly and projects over and a short distance above the cap of the bearing and is spaced above and normally held out of contact therewith by a' disk 16 of suitable fusible material. The disk is preferably formed. of tallow which is quickly melted when the bearing becomes heated to a slight degree, thus permitting the contact arm to spring down into engagement with the cap 6 instance the attaching plate 1 is shown astween the cap fastening nut 7 and a clamp-' lug nut 8 on the upper portion of the bolt of the contact blade or arm 2 of the circuit A thereby completing the circuit through the cap and the bolt 13 to which the current conducting" wire 12 is connected.

lfiy constructing the circuit closer and alarm mechanism as herein shown and de scribed i: appli' to any form 01 journal bearing and that the alarm may be, arranged at a distant point thus permitting the various machines 1 factory or mill to be connected to a cenl point in the oiiice or room of the engineer or operator andit will also be underst .an annunciator of any suitable be arranged in or co nected with rcoit and the particular machine or the i6 heated-bearing may be indiso that time will be lost in ascerngand r lieving the heated bearingbey damagethereitrom has occurred. .T f om the wires and the battery and is attachment therefore comprise-s ordiifiary nut, two washers of insuerial, and the circuit closer plate which is of sufficient sise'to pass 1y ordinary bolt likely to be on journal hearing. The toe of the sniiicienbly long and flexible to peri deflected upward so that it will Jon the top of the cap piate near the c nter of the same, and the heel of said circloser is suticicntly long to carry the sore 1G out oeyond the edge of the 1 if so the wire will not come into the latter. The other terminal sched' to anv part of or bolt bearing,. as its function is simto make electrical connection therewith. i one; the foregoing description taken in section with the accomnanying drawings,

will be seen that the same ma; be.

the construction and operation ot' the invention will be readily understood without requiring a nioreextended explanation.

Various changes in the term, proportion and the minor details of cons rnction may be resorted to without depart om the grinciple or sacrificing any of the advantages of? the invention as claimed.

Having thus described my invention, whet I claim is: I

The combination with journal bearing consisting of a base member, an arched cap plate overlying the same, bolts passing opward through said member and plate, and nuts on the upper ends of the bolts resting on the upper face of the plate alongits edges; of an electric alarm, the circuit wires lead ing therefrom, connections b ween one terminal and the cap plate, a circuitcloser con-' sisting of plate having a flat body and an upbent' toe, the former pierced with a relatively large hole adapted to loosely surround one of said bolts and a smalier hole in its heel, and the toe extending upward over said cap plate; a disk of fnsibleinsnlating material carried by the tip of the toe and resting on said plate, insulating washers above and below the body of said plate s clamping nut -on said bolt over the uppermost Washer, and binding screw in said smaller hole con nected with the remaining terminal.

in testimony whereof have hereunto set/ my hand in presence of two snbsceibing witnesses.

' JAMES Witnesses FRANK E. BLOOD,

l L l ED YARD mourns-:3.

VERNIE R. lhoenss. 

